The Easter Bunny legend of an egg-laying rabbit that hid eggs in a garden was first documented in the 1500s, says Discovery News. The Easter Bunny and peripheral tales came to the United States with German immigrants in the 1700s.

Every bunny needs a nest, so the practice of preparing nests for the eggs followed the legend, says Discovery News.

The basket, which also can be a symbol for a tomb, represents the nest, Jeanne Carrigan, a nun with the Sisters of St. Francis, told the Star in 2012.